Welding-machine.



G. E. DEAN.

WELDING MACHINE, APPLICATION FILED JULY 13, 1911.

1,006,537. Patented Oct. 24,1911.

2 SHEETS-SHEET 1.

314mm [on v c v QMZI Il ME-bflaw G. E. DEAN.

WELDING MACHINE.-

APPLICATION FILED JULY 13, 1911.

1,006,537, I Patented Oct. 24, 1911.

2 SHEETS-SHEET 2.

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LOW wees I I 8 M/ 9% g 815 awwgu w GEORGE E. DEAN; ALBION, MICHIGAN.

WELDING-MACHINE.

Specification of Letters Patent. Patented Oct. 24, 1911.

Application filed Iluly-13, 1911. Serial No. 638,317.-

To all whom it may concern:

Be it known thatl, GEORGE E. DEAN, a citizen of the United States,residing at Albion, Michigan, have invented certain new and usefulImprovements in Welding- Machines, of which the following is a'specification.

This invention relates to improvements in welding machines.

The main;objects of this invention are: First; to provide an improvedwelding machine adapted as an attachment or for embodiment in punchpresses of the type in common use. Second; to provide an improvedwelding machine adapted for use in the manufacture of metal shelvesWhere a series of spaced cross rods'are Welded to metal frame pieces asshown in the accompanying drawing. Third; to provide an improved weldingmachine adapted for the class of work stated, which ismainly automaticin its operation. Fourth; to provide an improved welding machine whichis economical in structure and at the same time eflicient and durable.

Further-objects, and objects relating to structural details, willdefinitely appear from the detailed description to follow.

I accomplish the objects of my invention by'the devices and meansdescribed in the following specification.

The invention is clearly defined and pointed out inthe claims.

A structure which is a preferred embodi ment of my invention isclearly'illustrated in the accompanying drawing, "forming a' part ofthis specification, in which:

Figure I is a detail vertical section through a structure embodying thefeatures of my invention, taken on a line corresponding to line 11 ofFig. II in which my improvements are shown embodied in a machine of thepunch press type, the bed,

frame and plunger being shown largely in conventional form. Fig. II isa'det'ail plan view of the structure appearing in Fig. I.

Fig. III is an. enlarged detail front .e1eva-' t-ion, showing thearrangement of the feed cam. Fig. IV is a detail vertical section takenon a line corresponding to line 44 of Fig. I, showing the details of thefeed means for the tqi'minal member 8. Fig. V is an inverted View .ofthe plupger bar 15.

Fig. VI is a detail front elevation of a modified construction, themodification being in the feeding means for the member 8. Fig. VII is adetail vertical section taken on a line corresponding to line 7-7 ofFig. VI. Fig. VIII is a detail vertical section taken on a linecorresponding to line 8-8 of Fig. VII.

Referring to the drawing, 1 represents the bed and 2 the plunger of themachine. On the bed of the machine I arrange a plate 3, which forconvenience is shown of insulating material, as the parts .carriedthereby should be insulated from the bed 1. Seated in this plate 3 isthe bed terminal 4:. This terminal is connected to a suitable electricalsource as by the wire 5., The parts to be joined as the frame piece 6and the cross rods 7, are arranged on this terminal. The coactingterminal member 8 is actuated by the plunger 2. The terminal 8 ismounted on the rod like way 9 to travel thereonand to permit a pivotalmovement. The member 8 is returned in its disengaging orinitial positionby means of the spring 10, which is secured to the member and arrangedwith its rear end in sliding engagement with the bar 11. This bar isconnected to a suitable electrical source as by means of the. wire 12.The upward movement of the member 8 is limited by a stop 13 and thecoacting stop bar 14. The member 8 travels under the plungerbar 15,which is actuated by the plunger'2. The arms 16 of the bar 15 aremounted on the way 9 and have a pivotal and longitudinal movementthereon. The longitudlnal movement is effected through the feed cam 17which is mounted on the pivot 18 and provided with the spring 19. On thebar 15 is a pin 20 which coacts with this'cam. On the down or Workstroke of the plungerbar the pin 20 passes under the cam so that on thereturn or up stroke of the bar, the bar is carried forward until the pinpasses over the upper end of the cam. This return movement of the baris''elfected by means of the spring 22 one end. of which ongages thereaiwardly projecting arm 23 on one of the arms16. When the pm passesfrom thecam 17" the bar .15 is returned to its initial position by thespring 23. 1

The bar 15 's provided with a'double rack 24L The member 8 isprovidedwith a double reversible pawl 25 coacting with these racks, so that whenthe bar 15 is moved longitudinally, the member8 is fed in one directionor the other, according to the engagement of the pawl. The pawl ispivoted at 26 in a slot-like opening provided therefor in the member 8below the bar 15. A spring 28 engages a projection 29 on the pawlopposite its pivot so that the pawl is yieldingly held with eithermember in engagement with the rack. To automatically reverse the pawl atthe end of the travel of the member 8 I provide trips 30 therefor. Bythis arrangement of parts on each stroke .of the plunger the terminalmember 8 is forced down into engagement with the work and on the returnof the parts to their initial position the terminal member isautomatically fed or advanced with a step-by-step movement. To regulatethe length of the feed stroke or step the pivot 18 is arranged in a slot31. When this pivot is moved to the right the feed strokes are madelonger and when it is moved to the left they are made shorter.

In the modification shown in Figs. VI, VII and VIII, the plunger 2 isprovided with a cross head 32. The plunger is supported in the frame 33and connected to the crank 32 by the pitman 35. The crank shaft isdriven through suitable gears, only the crank shaft 36 beingillustrated. The terminal member 8 in this modified construction ismounted on a rack bar 37 supported in suitable ways 38, driven by thegear 39. On the outer end of the shaft 40 of the gear 39 is a pair ofratchets 41. These ratchets are driven through the double pawl- 42 whichis pivotally mounted on the plunger rod 43 supported in a suitablebearing on a projecting arm 49 of the frame 33. pawl is yieldingly heldwith either of its detents engaged with its coacting ratchet wheel bymeans of the spring 50, one end of which is secured to the pin 51 on theplunger rod 43, and the other to a pin 52 on the pawl. This springserves to hold either detent of the pawl in engagement with this ratchetas will be readily understood. The plunger rod 43 is connected by thelink 58 to the crank disk 54. The wrist pin is adjustably secured to thedisk by grooving I the disk and arranging the pin supporting block 56 inthe groove. See Figs. VII and VIII. This provides a simple means ofadjusting the length of the feed stroke.

The structures illustrated are especially designed for themanufacture-of shelves for use in racks such as shown in my applicationfor patent filed April 21, 1911, Serial No. 662,567, in. which'theshelves are made up of frame bars 6 and cross rods 7 arranged thereon ina spaced relation.

Both forms or embodiments of my invention illustrated, are adaptationsof the same to punch presses. The parts of the press are The shownmainly in conventional form and merely for the purpose of illustratingmy invention.

Other modifications than those shown, will no doubt, suggest themselvesto those skilled in the art to which this invention relates.

In the structure shown, Figs. I to V inclusive, the machine is entirelyautomatic as the terminal member 8 is actuated and suit able pressureapplied at each stroke of the plunger and the feed movement is'accomplished as described and is automatically reversed in theconstruction shown in Figs. I to V. In the construction shown in Figs.VI to VIII I do not show means for automatically reversing the feed.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In a structure of the class described, the combination of a terminalmember, a rodlike way therefor said member being mounted on said way forlongitudinal and pivotal movement thereon, a bar connected to anelectrical source arranged at the rear of said way, a spring mounted onsaid terminal member and having sliding engagement with said bar,whereby said member is electrically connected with said bar and isreturned to its initial position; a stop on said terminal member,coacting'stop bar arranged parallel with said way, a plunger bararranged above said terminal member, said bar being mounted on said wayfor pivotal and longitudinal movement and bemg provided with a doubleratchet, a coacting reversible pawl on said terminal member, reversingtrips for said pawl, a pivoted feed cam, said plunger bar being providedwith a coacting pin adapted to pass under said cam on the work stroke ofsaid plunger bar, the pivot for said cam being adjustable whereby thefeed stroke of the plunger bar may be regulated, and springs forreturning said plunger bar to its initial I position.

2. In a structure of the class described, the combination of a terminalmember, a rod-like way therefor, said member being mounted on said wayfor longitudinal and pivotal movement thereon, a bar connected,

to an electrical source arranged at the rear of said Way, a springmounted on said terminal member and having sliding en'gage-' ment withsaid bar, whereby said member is electrically connected with said barand is returned to its initial position; a plunger bar arranged abovesaid terminal member, said bar being mounted on said way for pivotal andlongitudinal movement and being provided with a double ratchet, acoacting reversible pawl on said terminal member, reversing trips forsaid pawl, a pivoted feed cam, said plunger bar being provided with acoacting pin adapted to pass under said cam plunger bar to its initialposition.

3. In a structure of the class described, the combination of a terminalmember, a rodlike way therefor said member being mounted on said way forlongitudinal and pivotal movement thereon, a bar connected to anelectrical source arranged at the rear of said way, a spring mounted onsaid terminal member and having sliding engagement with said bar,whereby said member is electrically connected with said bar and isreturned to its initial position; a stop on said terminal member, acoacting stop bar arranged parallel with said way, a plunger bararranged above said terminal member, said bar being mounted on said wayfor pivotal and longitudinal movement and being provided with a ratchet,a coacting pawl on said terminal member, a pivoted feed cam, saidplunger bar being provided with a coacting pin adapted to pass undersaid cam on the work stroke ofsaid plunger bar, and springs forreturning said plunger bar to its initial position.

4. In a structure of the class described, the I combination of aterminal member, a rodlike way therefor said member being mounts ed onsaid way for longitudinal and pivotal movement thereon, a bar connectedto an electrical source arranged at the rear of said way, a springmounted on said terminal member and having sliding engagement with saidbar, whereby said member is electrically connected with said bar and isreturned to its initial position; a plunger bar arranged above saidterminal member, said bar being mounted on said way for pivotal andlongitudinal movement and being provided with a ratchet, a coacting pawlon said terminal member, a pivoted feed cam, said plunger bar beingprovided with a coacting pin adapted to pass under said cam on' the workstroke of said plunger bar, and springs for returning said plunger barto its initial position. r v

5. In a structure of the class described, the combination of a terminalmember, agrodlike way therefor said member being mounted on said way forlongitudinal and pivotal movement thereon, a plunger bar arranged abovesaid terminal member, said bar being mounted on said way for pivotal andlongitudinal movement and being provided with a double ratchet, acoacting reversible pawl on said terminal member, reversing trips forsaid pawl, a pivoted feed cam, said plunger bar being provided with acoacting pm adapted to pass under said cam on the work stroke of sadplunger bar, the ivot for said cam being adjustable where y. the feedbar being provided with a coacting pin,

adapted to pass under said cam on the work stroke of said plunger bar,and springs for returning said plunger bar to its initial position. i I

7. In a structure of the class described, the combination of a terminalmember, a

'waytheret'or, said member being mounted for pivotal movement, a plungerbar arranged above said terminal member, said bar being mounted forpivotal and longitudinal movement and being provided with a doubleratchet, a coacting reversible pawl on said terminal member, reversingtrips for said pawl, a pivoted feed cam, said plunger bar being providedwith a pin coacting with and adapted to pass under said cam on the Workstroke of said plunger bar, the pivot for said cam being adjustablewhereby the feed stroke of the plunger bar may be regulated,

and springs for returning sald plunger bar to its initial position.

I 8. In a structure of the class described, the combination of aterminal member, a way therefor, said member being mounted for pivotalmovement, a plunger bar arranged above said terminal member, said barbeing mounted for pivotal and longitudinal movement and being providedwith a ratchet, a coacting pawl on said terminal member, a pivoted feedcam, said plunger bar being provided with a pin coacting with andadapted to pass under said cam on the work stroke of said plunger barand springs for sition.

9. In astructure of the class described, the

returning said plunger bar to its initial pocombination of a terminalmember, a Way. therefor, said member being mounted for.

pivotal movement, a plunger bar arranged above sald termlnal member,said bar being .mounted for pivotal and longitudinal movement and beingprovided with a double rack,

member, reversing trips for said pawl and means for actuating saidplunger bar longitudinally on each actuation thereof.

10. --In a structure of the class described,

a coacting reversible pawl on said terminal being mounted for pivotaland longitudinal movement and being provided witha rack, a coacting pawlon said terminal member and means for actuating said plunger barlongitudinally on each actuation thereof.

11. In a welding machine, the combination of a traveling terminalmember, mounted for vertical movement, an actuating bar therefor mountedfor vertical and longitudinal movement, said actuating bar beingprovided with a double rack, a coacting reversible pawl on said terminalmember, trips for reversing said pawls at the ends of the travel of saidterminal member, means for imparting a reciprocating movement to saidactuating bar on each stroke thereof.

12. In a welding machine, the combination of a traveling terminalmember, mounted for vertical movement, an actuating bar therefor mountedfor vertical and longitudinal movement, said actuating bar beingprovided with a rack, a coacting pawl on said terminal member, and meansfor imparting a reciprocating movement to said actuating bar on eachstroke thereof.

13. In a welding machine, the combination of a traveling terminalmember, actuating means therefor comprising a plunger, and means forautomatically feeding said terminal member with a step-by-step movementon each work stroke of the plunger, said means being adjustable forregulating the feed step of said terminal member.

1 1. In a welding machine, the combination of a traveling terminalmember, actuating means therefor comprising a plunger, and means forautomatically feeding said terminal member on each work stroke of theplunger.

15. In a welding machine, the combination of the traveling terminalmember, a plunger bar for actuating said terminal member, said memberbeing arranged to travelbelow said bar and means for feeding saidterminal member.

16. In a welding machine, the combination of a traveling terminalmember, an actuating means therefor, means for feeding said terminalmember in both directions and means for automatically reversing the feedat the ends of the travel of said terminal member.

In witness whereof, I have hereunto set my hand and seal in the presenceof two witnesses.

GEORGE E. DEAN. [1..s.]

Witnesses:

MABEL GRAvEs, NINA CUA'IT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

-Washington, D. C.

